Remove unused support for SysV shared memory

src/trusted/desc/nacl_desc_wrapper.h

 // Copyright (c) 2012 The Native Client Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_DESC_NACL_DESC_WRAPPER_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_DESC_NACL_DESC_WRAPPER_H_
 
 #include "native_client/src/include/nacl_base.h"
 #include "native_client/src/trusted/desc/nacl_desc_base.h"
 #include "native_client/src/trusted/desc/nrd_xfer.h"
@@ skipping 33 matching lines @@
 
   // We will doubtless want more specific factory methods.  For now,
   // we provide a wide-open method.
   DescWrapper* MakeGeneric(struct NaClDesc* desc);
   // Same as above but unrefs desc in case of failure
   DescWrapper* MakeGenericCleanup(struct NaClDesc* desc);
   // Utility routine for importing sync socket
   DescWrapper* ImportSyncSocketHandle(NaClHandle handle);
   // Utility routine for importing Linux/Mac (posix) and Windows shared memory.
   DescWrapper* ImportShmHandle(NaClHandle handle, size_t size);
-  // Utility routine for importing SysV shared memory.
-  DescWrapper* ImportSysvShm(int key, size_t size);
 
  private:
   // The common data from this instance of the wrapper.
   DescWrapperCommon* common_data_;
 
   DISALLOW_COPY_AND_ASSIGN(DescWrapperFactory);
 };
 
 // A wrapper around NaClDesc to provide slightly higher level abstractions for
 // common operations.
@@ skipping 120 matching lines @@
 
   DescWrapperCommon* common_data_;
   struct NaClDesc* desc_;
 
   DISALLOW_COPY_AND_ASSIGN(DescWrapper);
 };
 
 }  // namespace nacl
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_DESC_NACL_DESC_WRAPPER_H_